route_manager: Use patched version to list out routes

Author: kp-thomas-yau

Cargo.lock

@@ -65,4 +65,7 @@ tracing = "0.1.37"
 tracing-subscriber = "0.3.17"
 tun-rs = { version = "2.5.1", features = ["async"] }
 twelf = { version = "0.15.0", default-features = false, features = ["env", "clap", "yaml"]}
-windows-sys = "0.61.0"
+windows-sys = "0.61.0"
+
+[patch.crates-io]
+route_manager = { git = 'https://github.com/yaucp/route_manager.git', branch = "list-empty-ip6" }